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3 years ago

Is CO2 a compound, molecule, or atoms/elements?

Chemistry

2 answers:

Lunna [17]3 years ago

4 0

Answer:

CO2 is a compound cause there is more then one

baherus [9]3 years ago

3 0

Answer:

Co2 is a molecule

Explanation:

Carbon dioxide is a molecule with the molecular formula CO2. Carbon dioxide, CO2, is a colorless gas. It is made of two oxygen atoms covalently bonded to one carbon atom. ... Carbon Dioxide: CO2 : chemical compound composed of two oxygen atoms covalently bonded thttps://www.google.com/imgres?a single carbon atom.

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4. Which of the following have mass? Select all that apply.

valkas [14]

All of these EXCEPT helium in a balloon

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3 years ago

Write the difference between isomerism and allotropy with one example each.

fredd [130]

Answer:

hope it helps ..

Explanation:

Allotropes can be defined as different types of compounds made out of the same single element but in different chemical formulas and different arrangements. Isomers can be defined as the chemical compounds that have a similar molecular formula but with different structural formulae. Graphite and Diamond.

7 0

3 years ago

How many atoms are present in 179.0 g of iridium?

posledela

160 atoms are present

4 0

4 years ago

Read 2 more answers

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mixer [17]

Answer: its the first one buster

3 0

3 years ago

Strontium-90 is a radioisotope that will decrease in mass by one-half every 29 years. How many years will it take for a 10.0-gra

Lelechka [254]

Answer: It will take 29 years for a 10.0-gram sample of strontium-90 to decay to 5.00 grams

Explanation:

Radioactive decay process is a type of process in which a less stable nuclei decomposes to a stable nuclei by releasing some radiations or particles like alpha, beta particles or gamma-radiations. The radioactive decay follows first order kinetics.

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

Half life is represented by $t_{\frac{1}{2}$

$t_{\frac{1}{2}=\frac{0.693}{\lambda}$

$\lambda$ = rate constant

Given : Strontium-90 decreases in mass by one-half every 29 years , that is half life of Strontium-90 is 29 years.

As half life is independent of initial concentration, it will take 29 years for a 10.0-gram sample of strontium-90 to decay to 5.00 grams as the amount gets half.

7 0

4 years ago